(3ehShYI Ydhe GdaVGA GdejSQI (B(30 ) : (3GdchcH GdeLghds - (3GdOShbj(B. (3eQGO GHQGgjes ((3OGQ GdcJGH GdeUQjs (3GdbGgQIs, 1991)
Keywords: (3GdaVGA (B- (3Ydhe (B- (3ehShYGJ s; (3GGdTgH s; (3GdchcH GdeLghd s